Question: Which municipal election which featured at least one Centre Party Candidate had the most eligible voters?
Paraphrase: Which election had the most voters?
SPARQL (Wikidata): select ?ent where { ?ent wdt:P31 wd:Q152450 . ?ent wdt:P1867 ?obj . ?ent wdt:P726 wd:Q506591 } ORDER BY DESC(?obj)LIMIT 5 
Answer: Municipal elections 2012 in Helsinki in Finland, Municipal elections 2012 in Espoo in Finland, Municipal elections 2012 in Tampere in Finland, Municipal elections 2012 in Vantaa in Finland, Municipal elections 2012 in Turku in Finland